CJA
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
This Article
Right arrow Full Text (PDF)
Right arrow Submit a scholarly reply
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Patel, N.
Right arrow Articles by Hagen, J. F.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Patel, N.
Right arrow Articles by Hagen, J. F.

Canadian Journal of Anesthesia, Vol 44, 669-673, Copyright © 1997 by Canadian Anesthesiologists' Society

ARTICLES

Heat conservation vs convective warming in adults undergoing elective surgery

N Patel, CE Smith, D Knapke, AC Pinchak and JF Hagen
Department of Anesthesiology, Case Western Reserve University, MetroHealth Medical Center, Cleveland, Ohio 44109, USA.

PURPOSE: To determine the relative efficacy of heat conservation and convective warming in maintaining perioperative normothermia, (central temperature > or = 36 degrees C). METHODS: Thirty-seven patients undergoing elective gynaecological, orthopaedic, or general surgery scheduled to last two hours were prospectively studied. Patients were randomized to one of two groups. Group 1 patients received heat conservation with reflective blankets (Thermadrape, Vital Signs, Inc., Totowa, NJ) applied preoperatively and warmed i.v. fluids (Hotline SIMS Level I Technologies, Inc, Rockland, MA), Group 2 patients received convective warming (BairHugger, Augustine Medical Inc., Eden Prairie, MN) after induction of anaesthesia and i.v. fluids at room temperature. All patients received general anaesthesia with isoflurane. Tympanic membrane and forearm-fingertip skin temperature gradients were measured perioperatively at 15 min intervals. RESULTS: Central temperature decreased after induction to a minimum level of 35.9 +/- 0.1 degrees C in group 1 and 36.0 +/- 0.1 degrees C in group 2 and then increased towards pre-induction values in group 2, and were higher (P < 0.05) than in group 1: 95% group 2 patients had central temperature > or = 36.0 degrees C at the end of surgery (vs 69% of group 1, P < 0.05). During the first 30 min in PACU, central temperatures were higher in group 1 than in group 2 (36.8 +/- 0.1 degrees C vs 36.2 +/- 0.2 degrees C, P < 0.05). After 60 min, central temperatures were similar (36.8 degrees C). The incidence of shivering and degree of peripheral cutaneous vasoconstriction were also similar. CONCLUSION: Patients receiving convective warming were more likely to leave the operating room normothermic, and had higher central temperatures during the first 30 min in the recovery room. The intergroup temperature differences were small, and by 60 min, had disappeared.


This article has been cited by other articles:


Home page
 Canadian J. AnesthesiaHome page
K. Wagner, E. Swanson, C. J. Raymond, and C. E. Smith
Comparison of two convective warming systems during major abdominal and orthopedic surgery: [Comparaison de deux systemes de chauffage par convection pendant des chirurgies abdominales et orthopediques majeures]
Can J Anesth, June 1, 2008; 55(6): 358 - 363.
[Abstract] [Full Text] [PDF]

Home page
 Br J AnaesthHome page
E. B. Rein, M. Filtvedt, L. Walloe, and J. C. Raeder
Hypothermia during laparotomy can be prevented by locally applied warm water and pulsating negative pressure
Br. J. Anaesth., March 1, 2007; 98(3): 331 - 336.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1997 by the Canadian Anesthesiologists' Society.